How to get tray of. ?

Thought we would find a dead mouse under fridge/freezer ,but no a terrible pile of gloop. So Just googled " how to clean a drip tray on a beko, " found this page, couldn't get tray of ,but got it cleaned. Spent the best part of an hour doing this ,half way through it my mother. Who is in her eighties, said ,just stop , lets go buy a new one, this is ridiculous, I let her read all these wee stories, she was laughing by time I got it cleaned, she's going to give it another chance